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* Is there a [[#frequentieverandering| change in frequency]]?
 
* Is there a [[#frequentieverandering| change in frequency]]?
 
* Is there a change in [[#Geleidingstijden|conduction time]]?
 
* Is there a change in [[#Geleidingstijden|conduction time]]?
* Is there a change in [[#Hartas|cardiac axe]]?
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* Is there a change in [[#Hartas|heart axis]]?
 
* Are there new [[#Pathologische Q's|pathological Q's]]?
 
* Are there new [[#Pathologische Q's|pathological Q's]]?
 
* Is there a change in [[#R top hoogte|R wave size]]?
 
* Is there a change in [[#R top hoogte|R wave size]]?
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An increase in PQ time may be seen in elderly patients, but may also be caused by the use of medication or by ischemia. Broadening of the QRS complex may be caused by medication or ischemia. An increase in QTc time may be caused by medication, but may also be heridetary. Comparison of previous made ECG registration with new registration may provide the clue.
 
An increase in PQ time may be seen in elderly patients, but may also be caused by the use of medication or by ischemia. Broadening of the QRS complex may be caused by medication or ischemia. An increase in QTc time may be caused by medication, but may also be heridetary. Comparison of previous made ECG registration with new registration may provide the clue.
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==Hart axes==
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==Heart axis==
Ischemia may cause a change in the cardiac axe, however also heridetary differences in hart axes may occur. Again, a previous ECG differentiates between old and new changes.
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Ischemia may cause a change in the heart axis, however also heridetary differences in heart axis may occur. Again, a previous ECG differentiates between old and new changes.
    
==Pathologische Q's==
 
==Pathologische Q's==

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